Hose-pipe coupling.



T. BROOKFIELD.

HOSE PIPE UOUPLING.

APPLICATION FILED DEO.16, 1911.

1,038,8&@, Patented Sept. 17, 1912.

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WITNESSES: I INVENTOR fieaczore firooz'fiezd e BY Arm/2W UNITED STATESIPATENT. OFFICE.

'rnnonoan raooxrmnn, or moors, rmxsn commnn, cnium.

nose-Hrs cot-mime.

Specification of Letters intent. Patented Sept. 1'7, 1912. Application filed December 10,1911. Serial no. 686,134.

To all whom it may concern:

.Be it known that I, THEODORE BROOK- FIELD, citizen of the Dominion, of Canada, residing at Kamloops, inthe Province of British Columbia, Canada, have invented a new and usefulHose-Pipe Coupling, of which the following is a specification.

This invention relatesto a coupling for a hose pipe for the conveyance of a fluid under pressure, the object of the invention being to provide a simple and readily connected coupling free from external projections which interfere with the endwise moving of the pipe while dragging it along the ground, as in the case of a fire hose. These objects are attained principally by the use of a joint closure, which is acted upon to seal thejoint, by the fluid pressure in the pipe whereby the connection does not reulre the provision of separate devices to tlghten the joint and the necessity for outwardly projecting studs or like projections is dispensed with.

The invention is particularly described in the following specification, reference being made to the drawings by which it is accompanied, in which:

Fi re 1 is a longitudinal section of the coup ing, the two'ends drawn a slight distance apart. Fig. 2'is an end view of the male part of the coupling, and Fig. 3, an

end view of the female part. Fig. 4 is an outside elevation showing the manner of securing the coupling against rotation and accidental release, the two ends drawn apart.

The construction of the coupling may be divided into what is required for the performance of three' general functions; the manner of securing the coupling ends to the hose pipe, the manner of securing the two parts of the coupling together, and the manner of elfecting the closure of the coupling joint.

In these drawings 2 represents the hose pipe, the ends of which are inserted each into avcoupling end or sleeve 3, which is the same for both male and female or spigot and faucet ends. The end of each isbo'red or cast conical, enlarging toward the couplin joint, and is provided with serrations 4. Tu each conical sleeve endv 3 is inserted The larger end of this ushing 5 is such as will pass through the smaller end of the sleeve?) and will rest against a shoulder 7 of the coupling end. The bushing 5 being inserted in the conical sleeve end 3, the endof the hosepipe2is entered in the annular space between the inner bore of the sleeve 3 and the outside of the bushing 5 and is forcibly pressed in until approximately against the shoulder 7. Owin to the square either tear apart, the sleeve 3 burst, or the bushing 5 collapse by crushing. This diswhich form an objectionable obstruction.

To facilitate the entrance of the hose pipe onto the bushing 5 and more particularly the removal of it the bushing 5 is furnished with slots 8 on its end face, in which slots any suitable driving key may be inserted and the ridges 6 forming a screw thread rotation of the bushing in relation to the hose pipe with aid the entrance of the hosepipe or effect its withdrawal.

The 'secondaig; part of the coupling is the means'by whi the male spigot 10 is secured in the faucet recess 11 provided for its reception. This spigot portion 10 is plainly c lindrical with the outer end rounded, as shown. Thefaucet recess 11 is cylindrical so that when spigot 10 is inserted it will.

fit neatly but not tightly. in the recess and will butt against the shoulder 12. On diametricall opposite sides of the outer surface of t e spigot and about its mid-length are projections 9 each in length about onesixth of the circumference. The engaging faces of these projections are parallel to the shoulder 13, so that they have no tightening effect to draw the joint to a closure. In the faucet recess 11 is an annular groove914 which corresponds with the projections the other end of the coupling and portions 15 are removedfrom the outer face of the faucet to form a passage for the members 9 to this oove, so that the spigot may be inserted in the faucet when the projections 9 are opposite to the removed portions 15 and penses with any necessity for clasping bands being turned these projections will prevent the coupling being drawn apart until the ends are again rotated to bring the projections opposite to the removed portions' To retain the two parts of the coupling in the locked position against accidentalro; tation light springs 16 of steel wire strain serted in the recesses 15- the outwardly turned ends 17 of which will, when the coupling is turned 'to' the holding position, enter apertures 18 \in the shoulder face 13. Means is thus provided whereby the two parts of the couplin are secured together in astron'g andv simp e manner.

It remains now to describe how the sealin or closure of-the joint of the couplin iseifected by the fluid pressure when a mitted to the pipe. This is accom lished by a thin cylindrical ring 20 inserte in a shouldered recess in the spigot or male end of the coupling, an annular groove 21 being. rovided' adjacent to the shoulder 7 into whic groove the rubber will expand and which will retain'it against accidental withdrawal. The length of-this-ring 20 is such that it will project beyond the end of the spigot 10 andv the inside'and outside of this outwardly projecting end are rounded or beveled ofl. .A corresponding recess 22 is provided in the faucet or female end of the coupling to reoeive the outwardly projecting end of the rubber joint ring 20. With this ring in place the spigot ma be inserted in the faucet and bein partlall turned to lock it, the end of the ring 20 wi l fit into the recess 22',but although fitting closely in that recess it isnot intended to depend on the tightness f of its fit to eflt'ect the closure, but when a fluid pressure is admitted to the pipes the ex "anded outw'a'rd y the pressure and the joint will be effectively closed.

'-It will be noticed that the lip of the'groove 1 22 projects inside the ring 20, when in lace. 3

to This is desi' ed to obviate the possi ility i of a flow 0 water around the end of the rubber ring 20 bein thin and elastlc will be rin before the pressure comes upon 'itin su cient force to expand it to make a tight closure. A simple and. effective coupling is thus provided that is free from any external projections to obstruct its free endwise movement and that is neat in appearance. Although described as attached to a hose pipe, for fire purposes one part, preferably the female or faucet end, may obvi-' ously be secured to the h drant.

Having now particular y described the invention, and havin drawn attention to the essential features 0% its construction, I hereby declare that what I. claim as new and de sire to be protected in by Letters Patent, is A two part hose pipe coupling, one art of which is provided with a s igot end aving radial projections of uni orm thickness, and the other with a faucet end havin internal annular groove of uniform width, and having removed entrant portions to said groove, such projections designed to fit in said groove in the faucet part of the coupling and to be admitted through the re moved portions in the'end thereof, the spigot end of said coupling having an internal ring, and an internal annular groove adja-- cent to said ring, 'a resilient ring held within lsaid spigot end, and having'an outerannular 7.6

head to fit said internal groove and abut; "said internal ring, the internal diameter of said spigot ring and said resilient membe'rf being equal, said resilient member havin its free edge V-sha-ped in cross sectiong id a a)v cet member having an'internal proje t-i 2 ring portion provided on one race with a-- sha ed groove to receive the free end of said resl 1ent member, and means for latching 'said'spigot andffaucet members together. 8 55 In testimony whereof I have signed my :name to this specification in the presence of two subscribing witnesses.

- THEODORE BBOOKFIELD.

Witnesses: ROWLAND BRI'I'IAIN,

WM. S. SOUTAR- I v 

